Improvement in chimneys



UNITED STATES PATENT OFFICE.)

JEREMIAH BROWELL, or SAN rannorsoo, CALIFORNIA.

IMPROVEMENT IN CHIMNEYS.

Specification forming part ofLetters Patent No. 137,412, dated April 1, 1873; application filed February 3, 1873.

To all whom it may concern:

Be it known that I, JEREMIAH BROWELL, of San Francisco city and county, State of California, have invented an Improvement in Chimneys; and I do hereby declare the following description and accompanying drawing are sufficient to enable any person skilled in the art or science to which it most nearly appertains to make and use my said invention or improvement without further invention or experiment.

My invention relates to that class of chimneys or stacks which are made in sections so as to be portable. My improvement consists in constructing the chimney or stack of sections of fire-clay, earthenware, cement, or artificial stone, and surrounding said chimney with a metallic tube larger than the chimney, in order to provide the necessary ventilation for keeping the inner pipe cool, and for furnishing warm air to the rooms of the house. It also consists of a novel arrangement for binding the sections together in their upright position, and for fixing and protecting the joints where they meet.

In order to explain my invention, reference is had to the accompanying drawing forming a part of this specification, in which- Figure 1 is a perspective view of a part of my chimney.

Let A represent the base upon which the chimney B rests, which is usually above a fireplace. The chimney I construct of fire-clay, earthenware, cement, or artificial-stone sections 0 O, which are made in the form of a tube and placed one upon another. The joints of these sections are formed by beveling the end of one section so that it will fit into a female bevel in the end of the next pipe or tube in the ordinary manner of uniting cementor earthenware pipes. For protecting and securing the joints I employ a metallic band or ring, d, the upper edge of which is placed outward or made into a cup shape, as shown, so as to provide an annular channel, 6, around the chimney in the upper part of the band or ring. In constructing a chimney or stack I first take two or more upright rods or bars, r r, as may be found necessary, and secure their lower ends in the proper position at intervals in the base A, so as to come outside of the chimney.

I then place the first or lowermost section 0 upon the base inside of the uprights 1' 1'. The bands or rings d having previously had holes made in their flaring rims corresponding with the position of the upright rods or bars 1" 0", one of them is let down along the rods until its lower end passes over the upper end of the section of the chimney which has been placed. The next section 0 is thenplaced upon the first one so that the band d will cover the joint formed by the two sections. The annular channel 6 is then filled with cement or other hardening fire-proof substance which will hermetically sea-l the joint and fix the band in' place. I then proceed with the chimney, placin g the band 01 over each joint formed, and sealing it in the same manner as above described, until the second floor of the house is reached, where I shall usually carry the end of the upright binding-rods 2 through the floor, and by means of nuts f tighten the entire number of sections together by screwing the nuts down against the floor or a plate, H. When the binding-rods are thus tightened on the second floor, the continuation of the chimney on the floor above will be supported by similar binding, which will be secured midway between the lower rods, as shown by the holes 2' in the upper plate H but in many instances a single series of rods will be sufficient to support the entire chimney. Outside of the chimney c 00 I then place a metallic tube, G, which is larger than the chimney c c 0, so that a space will be left between the two for ventilation. Holes 2' i are made through the upper floor, which communicates with the space between the chimneys, so that the warm air which escapes through the holes may serve to warm the upper room through which the chimney passes.

In building stacks for a furnace, the same construction can be employed, and the stack also supported by guys in the ordinary manner or guying furnace-stacks.

Instead of making the bands 01 solid and slipping them down along the rods, they can be made in sections so as to be clamped upon the joint by means of screws in the ordinary manner of clamping a band; however, I con= sider this but a mechanical equivalent of my arrangement.

I am aware that metallic chimneys have been constructed of an inner and an outer tube, and the space between them filled with a non-conducting material; but in that case the tubes soon burn out and Wear through, so as to become a nuisance by allowing the filling to fall out.

By constructing chimneys in the manner above described, all trouble about burning or Wearing out is entirely avoided. The chimney can be readily transported from placeto place, and will be especially valuable in countries subject to earthquakes, as the binding-rods,

will hold the sections firmly in place.

Having thus described my invention, what 1 claim, and desire to secure by Letters Patent, is-

In combination with a chimney or stack made of sections 0 G, the bands or rings (1 d, constructed as described, and the upright binding-rods r 1*, combined and applied as and for the purpose specified.

In witness whereof I hereunto set my hand and seal.

JEREMIAH BROWELL. [L. s.'] Witnesses:

JOHN L. BOONE, (J. M. RICHARDSON. 

